WNR2000 problems

[Springy150]

Hi

ok my router is WNR2000 and my problem is when you main ethernet computer is turned on it kicks my new dell inspiron off and when it dose work its very slow and stops anyway. I'v done the QuS and that works with the wii and xbox but not with my laptop. also tryed down grading from a WPA-PSK [TKIP] + WPA2-PSK [AES] to a WPA2-PSK [AES] witch worked for 10 mins that happend again any help would be most appreciated

Ashley

[jmizoguchi]

if ONLY wired pc is presents on network and rest i turned off, never slows down?

possible malware on this pc causing the flooding the router and/or bandwidth is taking by the wired pc